package cn.lkp.mall.order.config;
import org.springframework.amqp.core.Message;
import org.springframework.amqp.rabbit.connection.ConnectionFactory;
import org.springframework.amqp.rabbit.connection.CorrelationData;
import org.springframework.amqp.rabbit.core.RabbitTemplate;
import org.springframework.amqp.support.converter.Jackson2JsonMessageConverter;
import org.springframework.amqp.support.converter.MessageConverter;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.context.annotation.Primary;

/**
 * 定制RabbitTemplate
 */
@Configuration
public class MyRabbitConfig {
//    @Autowired
    private RabbitTemplate rabbitTemplate;
    //不手动创建构造器的话会产生循环引用
    @Primary
    @Bean
    public RabbitTemplate rabbitTemplate(ConnectionFactory connectionFactory) {
        RabbitTemplate rabbitTemplate = new RabbitTemplate(connectionFactory);
        this.rabbitTemplate = rabbitTemplate;
        rabbitTemplate.setMessageConverter(messageConverter());
        //定制RabbitTemplate
        initRabbitTemplate();
        return rabbitTemplate;
    }
    @Bean
    public MessageConverter messageConverter() {
        return new Jackson2JsonMessageConverter();
    }
    /**
     * 定制RabbitTemplate
     * 1、服务收到消息就会回调
     *      1、spring.rabbitmq.publisher-confirms: true
     *      2、设置确认回调ConfirmCallback
     * 2、消息正确抵达队列就会进行回调
     *      1、spring.rabbitmq.publisher-returns: true
     *         spring.rabbitmq.template.mandatory: true
     *      2、设置确认回调ReturnCallback
     *
     * 3、消费端确认(保证每个消息都被正确消费，此时才可以broker删除这个消息)
     *
     */
    //@PostConstruct  //MyRabbitConfig对象创建完成以后，执行这个方法
    public void initRabbitTemplate() {
        /**
         * 1、只要消息抵达Broker就ack=true
         * correlationData：当前消息的唯一关联数据(这个是消息的唯一id)
         * ack：消息是否成功收到
         * cause：失败的原因
         */
//        //设置确认回调
//        rabbitTemplate.setConfirmCallback((correlationData,ack,cause) -> {
//            System.out.println("confirm...correlationData["+correlationData+"]==>ack:["+ack+"]==>cause:["+cause+"]");
//        });
        rabbitTemplate.setConfirmCallback(new RabbitTemplate.ConfirmCallback() {
            @Override
            public void confirm(CorrelationData correlationData, boolean ack, String cause) {
                System.out.println("confirm...correlationData["+correlationData+"]==>ack:["+ack+"]==>cause:["+cause+"]");
            }
        });
        /**
         * 只要消息没有投递给指定的队列，就触发这个失败回调
         * message：投递失败的消息详细信息
         * replyCode：回复的状态码
         * replyText：回复的文本内容
         * exchange：当时这个消息发给哪个交换机
         * routingKey：当时这个消息用哪个路邮键
         */
//        rabbitTemplate.setReturnCallback((message,replyCode,replyText,exchange,routingKey) -> {
//            System.out.println("Fail Message["+message+"]==>replyCode["+replyCode+"]" +
//                    "==>replyText["+replyText+"]==>exchange["+exchange+"]==>routingKey["+routingKey+"]");
//        });
        rabbitTemplate.setReturnCallback(new RabbitTemplate.ReturnCallback() {
            @Override
            public void returnedMessage(Message message, int replyCode, String replyText, String exchange, String routingKey) {
                System.out.println("Fail Message["+message+"]==>replyCode["+replyCode+"]" +
                        "==>replyText["+replyText+"]==>exchange["+exchange+"]==>routingKey["+routingKey+"]");
            }
        });
    }
}
